Ysa Divine

Hmmm maybe this https://www.mangago.zone/read-manga/i_raised_cinderella_preciously/
?

https://www.mangago.zone/read-manga/murderer_llewellyn_s_enchanting_dinner_invitation/
It’s a BL but it’s not rapey at all and hope you give it a shot

https://www.mangago.zone/read-manga/my_charming_neighbor_has_a_secret/

Not sure if they're stalkers, but these are GLs that feature yanderes:

https://www.mangago.zone/read-manga/yandere_meruko_chan_likes_her_senpai/
https://www.mangago.zone/read-manga/lovedeath/
https://www.mangago.zone/read-manga/lonely_wolf_lonely_sheep/
https://www.mangago.zone/read-manga/and_kaede_blooms_gorgeously/
https://www.mangago.zone/read-manga/kitanai_kimi_ga_ichiban_kawaii/
https://www.mangago.zone/read-manga/saeism/
https://www.mangago.zone/read-manga/tatoe_sekai_ga_owattemo_watashi_wa_kanojo_wo_erabanai/
https://www.mangago.zone/read-manga/fujiyuu_sekai/
https://www.mangago.zone/read-manga/yamitsuki/
https://www.mangago.zone/read-manga/tsukarekitta_onna_ga_shinuhodo_iyasareru_tame_ni/
https://www.mangago.zone/read-manga/oshi_ga_tonari_de_jugyou_ni_shuuchuu_dekinai/
https://www.mangago.zone/read-manga/savior/
https://www.mangago.zone/read-manga/your_fetters/
https://www.mangago.zone/read-manga/yandere_chan_x_negative_chan/
https://www.mangago.zone/read-manga/this_world_is_mine/
https://www.mangago.zone/read-manga/serenade_keum_kyesoo/
https://www.mangago.zone/read-manga/i_love_amy/
https://www.mangago.zone/read-manga/tadokoro_san/ (mild yandere FL)
https://www.mangago.zone/read-manga/protagonist_x_rival/ (mild yandere FL)
https://www.mangago.zone/read-manga/useless_princesses/ (mild yanderes MC&FL)
https://www.mangago.zone/read-manga/yukino_plan/ (short story)
https://www.mangago.zone/read-manga/you_are_my_angela/ (short story)
https://www.mangago.zone/read-manga/twisted_girl_x_twisted_girl/ (short story)
https://www.mangago.zone/read-manga/yandere_gl_story/ (short story)
https://www.mangago.zone/read-manga/watashi_wo_hitorijime_ni_shite/ (FIRST CHAPTER ONLY!)
https://www.mangago.zone/read-manga/yuri_anthology_of_another_world/ (SECOND CHAPTER ONLY!)
https://www.mangago.zone/read-manga/cursed_video/ (one-shot)
https://www.mangago.zone/read-manga/mahiro_chan_s_secret/ (one-shot)
https://www.mangago.zone/read-manga/i_love_you_hanatsu_yaya/ (one-shot)
https://www.mangago.zone/read-manga/happy_end_for_you/ (one-shot)
https://www.mangago.zone/read-manga/rapunzel_komoda/ (one-shot)
https://www.mangago.zone/read-manga/you_are_still_in_a_bird_cage/ (one-shot)
https://www.mangago.zone/read-manga/anata_to_kanojo_wa_watashi_dake/ (one-shot)
https://www.mangago.zone/read-manga/the_box_of_letters/ (one-shot)
https://www.mangago.zone/read-manga/a_story_of_a_girl_who_killed_her_best_friend/ (one-shot)
https://www.mangago.zone/read-manga/arisa_is_obsessed_with_arisa/ (one-shot)
https://www.mangago.zone/read-manga/i_m_bound_by_miho_chan/ (one-shot)
https://www.mangago.zone/read-manga/the_cheery_girl_who_loves_the_gloomy_girl_and_that_handsome_guy/ (one-shot)
https://www.mangago.zone/read-manga/just_the_way_you_are/ (one-shot)
https://www.mangago.zone/read-manga/yabai_hito_ni_hitomebore_suru_hanashi/ (one-shot)
https://www.mangago.zone/read-manga/the_final_confession/ (one-shot)

BL but its oddly a cute story https://www.mangago.zone/read-manga/stalker_x_stalker_kadiro/